Machine for cutting paper, cardboard, and the like



Mar. 6, 1923. v H. J. POOLE MACHINE FOR CUTTING PAPER, CARDBOARD, AND.THE LIKE Filed Feb. 14, 1921 s sheets-sheet 1 flaen Z07 :2 Foo aMan-6,1923. 1,447,8 5

H. J. POOLE MACHINE FOR CUTTING PAPER, CARDBOARD, AND THE LIKE FiledFeb. 14, 1921 5 sheets-sheet 2 ILTJ I Y, Z V Iii/I /1 ////r/ )4 r A f I(ZiPaak Mar. 6, 1923. v 1,447,885

. H. J. PG'OLE MACHINE FOR CUTTING PAPER, CARDBOARD, AND THE LIKEFiledFeb. 14, 1921 3 sheets-sheet 5 4L AZZ f a/vefg Patented Mar. 6,1923.

N OFFFC E HENRY JEFFREY POOLE, OF LONDON, ENGLAND.

Application filed February 14, 1921. SerialNo; 444,812

To all wit-omit may concern:

lie it known that I, HENRY JEFFREY Poona, a subjectof the King of GreatBritain, residing in London, England, have invented certain new anduseful Improvements in Machines for Cutting Paper, \ardboard, and. thelike, of which the following is a specification. i

This invention relates; to machines for notching cardboard blanks, asfor example in performing one of the first operations on cardboardblanks in the manufacture of cardboard boxes and-box lids,-viz, cuttingout the. four corners of the rectangular blank, but the invention maybeapplied to the cutting or note-hing of thin materials generally in oneor more sheets at a time, according to the thickness of'the material.-In any case the excision ofthe four corners or the formation of thenotches of whatever shape in the blank is performed in two operations ofthe machinejhalf-of the notches being m'ade'in'one! operation and theother half after reversal of the blank in the machine, by means ofvertically reciprocating cutting or notching devices in. conjunctionwith a corresponding number of fixed cooperating devices.

In the improved machine constituting the present invention provision is:made for the relative adjustment not only of the. inclividual blades ofeach pair which cooperate to cut a notch, but also for the relativelateral adjustment of each pair of reciprocating blades and theassociated pair of fixed blades, and of each set of reciprocating bladesand associated fixed blades jointly with respect to the other sets ofblades in the machine.

The invention will be more particularly described with. reference to theaccompanying drawings, wherein Fig. 1 is a. front elevation of anapparatus embodying the invention adapted to make two rectangularexcisions from the corners of a blank at each operation; Fig. 2 is atransverse. section; Fig. 3 a horizontal section through one of theguillotines; Fig. 4 a plan View of the fixed cutting device cooperatingwith a guillotine; Fig. 5 a. part vertical section shewing a modifiedconstruction of a reciprocating and cooperating fixed cutting device;Fig. 6 a plan view of the latter; and Figs. 711 are partial plans ofblanks showing various kinds of notches and excisions which may be madewith the apparatus.

Referring firstto Figs. 1-4, the two vertically reciprocating bladecarriers or guillotines a, have each two blades" 72, c disposed at rightangles to'ea'ch other and each adustable laterally, i. e. horizontallyin the plane of the blades,'being secured in position on the guillotineby" keep plates d and set screws cl. The guillotines areguided forvertlcal movement in guideways e which are capable of relative lateraladjustment, as

for example by being'laterally slidable' on vertical frames or standards6 to'which they are secured'by studs etpassingthrotigh horizontal slotsin the standards 6 andengagmg the guideser One or both of the standardse may also b e' mounted'to slide sidewise 1n abed plate 7. Theguillotines are actuated bythe engagement of'rol'lers with cams IYLQOII-the driving'sh'afft "of the machine, one of which is shown as being ofextra width soas to remain in engagement with the cooperating rollerover the full range'of relative lateral adjustme'nt ofthe guillotines'.Alternatively the cams may be axially adj ustable along the drivingshaft or a single cam of sufiicient peripheral width may be used. Theguillotines which are depressed by the cams to bring the cutting devicesinto action are raised by means: of springs such as i accommodated insuitable recesses in the frames and reacting on the guillotines.

The individual blades 7' of each pair of fixed blades are bevelled forcooperation with guideways 7c, is, of which is act also as clamps forthe blades, being secured by set screws 70 to the bases of the frames 0.The blades 7' are horizontally adjustable in directions at right anglesto their cutting edges and therefore relatively to each other in theirguide ways, the limit of adjustment of one of them being determined byits abutment with the other.

An adjustable stop Z on the bedplate 7 determines the depth of cut fromfront to rear and a laterally adjustable stop m which also serves as afeed guide determines the width of the cut sidewise the blank beinginserted from the front of the machine with its left edge abutting onguide m (Fig. 1). A finger guard a extends along the front of themachine, which may be treadle-operated or power driven.

It will be understood that the character and shape of the cuttingdevices will depend upon the character of the notch or cut to be made.Thus, the plain rectangular notches in the corners of the blank shown inFig. 7 are made by two straight blades set to enclose a right angle.Each of the notches shown in Fig. 10 is made by a similar pair ofstraight blades, but one of them has a. tapering extension Z) (indicatedin dotted lines in Fig. extending beyond the plane of its fellow blade0, one of the cooperating fixed blades being chamtered at its front endas indicated by the dotted line in Fig. to leave a gap correspondingwith the blade extension 7).

Also the blades, although straight edged, may be set at other anglesthan a. right angle as for cutting the small corner notches in the blankof Fig. 9, or they may be curved or gouge-shaped to cut the curvedcorner notches in the blank of Fig. 9.

In the modified construction of Figs, 5 and 6 the. cooperating cuttingdevices are more of the character of a male and female die, the former 0being removably secured in the guillotine a, and the latter 2) beingremovably secured over an aperture q in the base of the frame and beingadjustable later ally and as viewed in Figs. 5 and 6 by slacking andsetting up the clamping screws 7), and fore and aft by sliding the diebetween the guides 29 before setting up the clamping screws, so as tobring it into register with the male die 0. Such a modification would besuitable for making the square notches shown in the edge of the blank inFig. 8 or (with suitably dimensioned dies) rectangular notches or slotssuch as shown in Fig. 11.

In every case the notching which can be performed by a machine withoutchange or readjustment of the cutting devices is eftected in twooperations between which the blank is reversed in position, the secondset of notches being thus a symmetrically disposed repetition of thefirst set.

Having thus described the nature of the said invention and the bestmeans I know of carrying the same into practical e-llect, I claim Amachine for cutting cardboard blanks and other thin sheets by thecooperation of reciprocating and fixed cutting devices, comprising twopairs of reciprocating blades and two pairs of fixed blades cooperatingwith the respective pairs of reciprocating blades, means for adjustingone-set of reciprocating blades with its cooperating fixed bladeslaterally relatively to the other. sets of blades, means for adjustingeach pair of fixed blades relatively to the cooperating pair ofreciprocating blades, andmeans for adjusting the individual bladesreciprocating and fixed, relatively to each other.

In testimony whereof I have signed my name to this specification.

HENRY JEFFREY POOLE.

